If kinetic energy increases does pressure decrease?
1 answer:
If molecules are in a closed container then we expect the pressure to increase as the kinetic energy increases. This is because the atoms of an element collide with the walls of the container and increase the pressure.
If we use the formula , where P is the pressure, V is the volume, n is the number of moles, R the ideal gas constant and T is the temperature. According to the formula, P is directly proportional to temperature. An increase in temperature leads to an increase in pressure.
Since we know that temperature is the average kinetic energy of molecules present. It means as we increase the temperature we increase the kinetic energy of the molecules which in turn leads to an increase in the pressure.
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Answer:
0.022 moles of ammonium phosphate produced by the reaction of 0.065mol of ammonia.
Explanation:
Moles of ammonia = 0.065 moles
According to reaction, 3 moles of ammonia gives 1 mole of ammonium phosphate ,then 0.065b moles of ammonia will give:
0.022 moles of ammonium phosphate produced by the reaction of 0.065mol of ammonia.
Answer:
Unit cells which are present per cubic centimeter of Ag =
Volume =
Edge length =
Explanation:
(a)
Given that:-
The density of the solid Ag = 10.5 g/cm³
Molar mass of silver = 107.8682 g/mol
So, Moles present per cm³ of Ag = =0.0973 mol/cm³
Also, 1 mole = atoms.
So,
Atoms present per cm³ of Ag =
Thus, answer =
In FCC, the number of atoms in the unit cell = 4 unit cells
So,
Unit cells which are present per cubic centimeter of Ag =
<u>Unit cells which are present per cubic centimeter of Ag = </u>
(b)
The reciprocal of the unit cell/cm³ is the volume of the unit cell.
So,
<u>Volume = </u>
(c)
Also, Volume =
Thus, edge length = =
<u>Edge length = </u>